specially designed float material automatically vents built up gases on system start up and under working pressure

can be used on feed side or discharge side of pump (or both)

standard 1/2" NPT threaded connections or optional 3/4" NPT available in other materials of construction for various gaseous liquid chemicals

Gases or vapor are compressible, and if not vented cause what is known as vapor lock in your metering pump and the system, causing the metering pump to malfunction and in most cases the pump to stop discharging chemical to the system.

The valve is designed to allow for the venting of gases and condensed vapor back to the feed tank, which improves priming on initial startups and continuous trouble free operation while working under pressure.

The valve when in operation vents gases, vapor and a small amount of liquid, which is the same as the chemical being pumped. This discharge must be returned through hard piping or tubing back to tank, to prevent personnel or equipment from coming in contact with the vented corrosive liquid.